Seems he was designing knives for Parker Cutlery about 20yrs or so ago. From what I can find he is still designing knives in Seki Japan. Doesn't seem to be alot of info on him. He has been able to remain under the radar, though most of his work from what I've been able to look at is very nice, it seems alot of his knives are reworks of older patterns. I know this probably doesn't answer any of your questions, as until you mentioned him I have never heard of him, and most of my books have little if any info on his work.
Leighton
Leighton